Charlie..........I think you are referring to Wretham Hall, where the 359th officers were based. It is in 600 acres about 6 miles N. of Thetford ,away from the base.
The nearest railway station was Thetford where thay caught the train to London.
The favourite pub was the "Dog and Partridge" in E. Wretham, known to the GIs as the "Pig and Whistle". Also used the "Green Dragon".
Incidentally Thomas Paine was born in Thetford and there is a commemorative plaque there.
Regards Nick